diff options
Diffstat (limited to 'modules/audio/audio_hw.c')
| -rw-r--r-- | modules/audio/audio_hw.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/modules/audio/audio_hw.c b/modules/audio/audio_hw.c new file mode 100644 index 0000000..bb6659d --- /dev/null +++ b/modules/audio/audio_hw.c @@ -0,0 +1,412 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define LOG_TAG "audio_hw_default" +//#define LOG_NDEBUG 0 + +#include <errno.h> +#include <pthread.h> +#include <stdint.h> +#include <sys/time.h> + +#include <cutils/log.h> + +#include <hardware/hardware.h> +#include <hardware/audio.h> +#include <hardware/audio_hal.h> + +struct stub_audio_device { + struct audio_hw_device device; +}; + +struct stub_stream_out { + struct audio_stream_out stream; +}; + +struct stub_stream_in { + struct audio_stream_in stream; +}; + +static uint32_t out_get_sample_rate(const struct audio_stream *stream) +{ + return 44100; +} + +static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate) +{ + return 0; +} + +static size_t out_get_buffer_size(const struct audio_stream *stream) +{ + return 4096; +} + +static uint32_t out_get_channels(const struct audio_stream *stream) +{ + return AUDIO_CHANNEL_OUT_STEREO; +} + +static int out_get_format(const struct audio_stream *stream) +{ + return AUDIO_FORMAT_PCM_16_BIT; +} + +static int out_set_format(struct audio_stream *stream, int format) +{ + return 0; +} + +static int out_standby(struct audio_stream *stream) +{ + return 0; +} + +static int out_dump(const struct audio_stream *stream, int fd) +{ + return 0; +} + +static int out_set_parameters(struct audio_stream *stream, const char *kvpairs) +{ + return 0; +} + +static char * out_get_parameters(const struct audio_stream *stream, const char *keys) +{ + return strdup(""); +} + +static uint32_t out_get_latency(const struct audio_stream_out *stream) +{ + return 0; +} + +static int out_set_volume(struct audio_stream_out *stream, float left, + float right) +{ + return 0; +} + +static ssize_t out_write(struct audio_stream_out *stream, const void* buffer, + size_t bytes) +{ + /* XXX: fake timing for audio output */ + usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) / + out_get_sample_rate(&stream->common)); + return bytes; +} + +static int out_get_render_position(const struct audio_stream_out *stream, + uint32_t *dsp_frames) +{ + return -EINVAL; +} + +/** audio_stream_in implementation **/ +static uint32_t in_get_sample_rate(const struct audio_stream *stream) +{ + return 8000; +} + +static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate) +{ + return 0; +} + +static size_t in_get_buffer_size(const struct audio_stream *stream) +{ + return 320; +} + +static uint32_t in_get_channels(const struct audio_stream *stream) +{ + return AUDIO_CHANNEL_IN_MONO; +} + +static int in_get_format(const struct audio_stream *stream) +{ + return AUDIO_FORMAT_PCM_16_BIT; +} + +static int in_set_format(struct audio_stream *stream, int format) +{ + return 0; +} + +static int in_standby(struct audio_stream *stream) +{ + return 0; +} + +static int in_dump(const struct audio_stream *stream, int fd) +{ + return 0; +} + +static int in_set_parameters(struct audio_stream *stream, const char *kvpairs) +{ + return 0; +} + +static char * in_get_parameters(const struct audio_stream *stream, + const char *keys) +{ + return strdup(""); +} + +static int in_set_gain(struct audio_stream_in *stream, float gain) +{ + return 0; +} + +static ssize_t in_read(struct audio_stream_in *stream, void* buffer, + size_t bytes) +{ + /* XXX: fake timing for audio input */ + usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) / + in_get_sample_rate(&stream->common)); + return bytes; +} + +static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream) +{ + return 0; +} + + +static int adev_open_output_stream(struct audio_hw_device *dev, + uint32_t devices, int *format, + uint32_t *channels, uint32_t *sample_rate, + struct audio_stream_out **stream_out) +{ + struct stub_audio_device *ladev = (struct stub_audio_device *)dev; + struct stub_stream_out *out; + int ret; + + out = (struct stub_stream_out *)calloc(1, sizeof(struct stub_stream_out)); + if (!out) + return -ENOMEM; + + out->stream.common.get_sample_rate = out_get_sample_rate; + out->stream.common.set_sample_rate = out_set_sample_rate; + out->stream.common.get_buffer_size = out_get_buffer_size; + out->stream.common.get_channels = out_get_channels; + out->stream.common.get_format = out_get_format; + out->stream.common.set_format = out_set_format; + out->stream.common.standby = out_standby; + out->stream.common.dump = out_dump; + out->stream.common.set_parameters = out_set_parameters; + out->stream.common.get_parameters = out_get_parameters; + out->stream.get_latency = out_get_latency; + out->stream.set_volume = out_set_volume; + out->stream.write = out_write; + out->stream.get_render_position = out_get_render_position; + + *stream_out = &out->stream; + return 0; + +err_open: + free(out); + *stream_out = NULL; + return ret; +} + +static void adev_close_output_stream(struct audio_hw_device *dev, + struct audio_stream_out *stream) +{ + free(stream); +} + +static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs) +{ + return -ENOSYS; +} + +static char * adev_get_parameters(const struct audio_hw_device *dev, + const char *keys) +{ + return NULL; +} + +static int adev_init_check(const struct audio_hw_device *dev) +{ + return 0; +} + +static int adev_set_voice_volume(struct audio_hw_device *dev, float volume) +{ + return -ENOSYS; +} + +static int adev_set_master_volume(struct audio_hw_device *dev, float volume) +{ + return -ENOSYS; +} + +static int adev_set_mode(struct audio_hw_device *dev, int mode) +{ + return 0; +} + +static int adev_set_mic_mute(struct audio_hw_device *dev, bool state) +{ + return -ENOSYS; +} + +static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state) +{ + return -ENOSYS; +} + +static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev, + uint32_t sample_rate, int format, + int channel_count) +{ + return 320; +} + +static int adev_open_input_stream(struct audio_hw_device *dev, uint32_t devices, + int *format, uint32_t *channels, + uint32_t *sample_rate, + audio_in_acoustics_t acoustics, + struct audio_stream_in **stream_in) +{ + struct stub_audio_device *ladev = (struct stub_audio_device *)dev; + struct stub_stream_in *in; + int ret; + + in = (struct stub_stream_in *)calloc(1, sizeof(struct stub_stream_in)); + if (!in) + return -ENOMEM; + + in->stream.common.get_sample_rate = in_get_sample_rate; + in->stream.common.set_sample_rate = in_set_sample_rate; + in->stream.common.get_buffer_size = in_get_buffer_size; + in->stream.common.get_channels = in_get_channels; + in->stream.common.get_format = in_get_format; + in->stream.common.set_format = in_set_format; + in->stream.common.standby = in_standby; + in->stream.common.dump = in_dump; + in->stream.common.set_parameters = in_set_parameters; + in->stream.common.get_parameters = in_get_parameters; + in->stream.set_gain = in_set_gain; + in->stream.read = in_read; + in->stream.get_input_frames_lost = in_get_input_frames_lost; + + *stream_in = &in->stream; + return 0; + +err_open: + free(in); + *stream_in = NULL; + return ret; +} + +static void adev_close_input_stream(struct audio_hw_device *dev, + struct audio_stream_in *in) +{ + return; +} + +static int adev_dump(const audio_hw_device_t *device, int fd) +{ + return 0; +} + +static int adev_close(hw_device_t *device) +{ + free(device); + return 0; +} + +static uint32_t adev_get_supported_devices(const struct audio_hw_device *dev) +{ + return (/* OUT */ + AUDIO_DEVICE_OUT_EARPIECE | + AUDIO_DEVICE_OUT_SPEAKER | + AUDIO_DEVICE_OUT_WIRED_HEADSET | + AUDIO_DEVICE_OUT_WIRED_HEADPHONE | + AUDIO_DEVICE_OUT_AUX_DIGITAL | + AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET | + AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET | + AUDIO_DEVICE_OUT_ALL_SCO | + AUDIO_DEVICE_OUT_DEFAULT | + /* IN */ + AUDIO_DEVICE_IN_COMMUNICATION | + AUDIO_DEVICE_IN_AMBIENT | + AUDIO_DEVICE_IN_BUILTIN_MIC | + AUDIO_DEVICE_IN_WIRED_HEADSET | + AUDIO_DEVICE_IN_AUX_DIGITAL | + AUDIO_DEVICE_IN_BACK_MIC | + AUDIO_DEVICE_IN_ALL_SCO | + AUDIO_DEVICE_IN_DEFAULT); +} + +static int adev_open(const hw_module_t* module, const char* name, + hw_device_t** device) +{ + struct stub_audio_device *adev; + int ret; + + if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0) + return -EINVAL; + + adev = calloc(1, sizeof(struct stub_audio_device)); + if (!adev) + return -ENOMEM; + + adev->device.common.tag = HARDWARE_DEVICE_TAG; + adev->device.common.version = 0; + adev->device.common.module = (struct hw_module_t *) module; + adev->device.common.close = adev_close; + + adev->device.get_supported_devices = adev_get_supported_devices; + adev->device.init_check = adev_init_check; + adev->device.set_voice_volume = adev_set_voice_volume; + adev->device.set_master_volume = adev_set_master_volume; + adev->device.set_mode = adev_set_mode; + adev->device.set_mic_mute = adev_set_mic_mute; + adev->device.get_mic_mute = adev_get_mic_mute; + adev->device.set_parameters = adev_set_parameters; + adev->device.get_parameters = adev_get_parameters; + adev->device.get_input_buffer_size = adev_get_input_buffer_size; + adev->device.open_output_stream = adev_open_output_stream; + adev->device.close_output_stream = adev_close_output_stream; + adev->device.open_input_stream = adev_open_input_stream; + adev->device.close_input_stream = adev_close_input_stream; + adev->device.dump = adev_dump; + + *device = &adev->device.common; + + return 0; +} + +static struct hw_module_methods_t hal_module_methods = { + .open = adev_open, +}; + +struct audio_module HAL_MODULE_INFO_SYM = { + .common = { + .tag = HARDWARE_MODULE_TAG, + .version_major = 1, + .version_minor = 0, + .id = AUDIO_HARDWARE_MODULE_ID, + .name = "Default audio HW HAL", + .author = "The Android Open Source Project", + .methods = &hal_module_methods, + }, +}; |